Okwangoku, umgangatho we-hydroxypropyl methylcellulose yasekhaya uyahluka kakhulu, kwaye ixabiso liyahluka kakhulu, okwenza kube nzima kubathengi ukwenza ukhetho olufanelekileyo. I-HPMC eguquliweyo yenkampani efanayo yangaphandle yimiphumo yeminyaka emininzi yophando. Ukongezwa kwezinto ezilandelelanayo kunokuphucula ukusebenza kolwakhiwo kwaye kuphucule ukusebenza. Kakade ke, kuya kuchaphazela ezinye iimpawu, kodwa ngokubanzi kusebenza kakuhle; Injongo yokongeza ezinye izithako kukunciphisa iindleko, okubangela ukuncipha okukhulu kokugcinwa kwamanzi, ukuhambelana kunye nezinye iimpawu zemveliso, okubangela iingxaki ezininzi zomgangatho wokwakha.
Kukho umahluko olandelayo phakathi kwe-HPMC ecocekileyo kunye ne-HPMC exutyiweyo:
1. I-HPMC ecocekileyo ithambile emehlweni kwaye inobunzima obuphantsi, ukusuka kwi-0.3-0.4g/ml; i-HPMC exutyiweyo inobumanzi obungcono kwaye ivakala inzima, nto leyo eyahlukileyo ngokucacileyo kwimveliso yokwenyani ngembonakalo.
2. Isisombululo samanzi esicocekileyo se-HPMC sicacile, sidlulisela ukukhanya okuphezulu, kwaye izinga lokugcina amanzi liphezulu ≥ 97%; isisombululo samanzi se-HPMC esixutyiweyo sinamafu, kwaye izinga lokugcina amanzi linzima ukufikelela kwi-80%.
3. I-HPMC ecocekileyo akufuneki ivumba i-ammonia, istatshi kunye notywala; i-HPMC exutyiweyo idla ngokuvumba zonke iintlobo zevumba, nokuba ayinancasa, iya kuziva inzima.
4. Umgubo we-HPMC ococekileyo unemicu phantsi kwe-microscope okanye iglasi yokukhulisa; i-HPMC exutyiweyo inokubonwa njengezinto eziqinileyo okanye iikristale phantsi kwe-microscope okanye iglasi yokukhulisa.
Ukuphakama okungenakunqotshwa kwama-200,000?
Iingcali ezininzi zasekhaya kunye neengcali zipapashe amaphepha akholelwa ukuba imveliso ye-HPMC ithintelwe kukhuseleko kunye nokutywinwa kwezixhobo zasekhaya, inkqubo yokulunywa kunye nemveliso ephantsi koxinzelelo, kwaye amashishini aqhelekileyo akanakuvelisa iimveliso ezinobunzima obungaphezulu kwama-200,000. Ehlotyeni, akunakwenzeka ukuvelisa iimveliso ezinobunzima obungaphezulu kwama-80,000. Bakholelwa ukuba iimveliso ezibizwa ngokuba ngama-200,000 kufuneka zibe ziimveliso zobuxoki.
Iingxoxo zengcali azinangqiqo. Ngokwemeko yangaphambili yemveliso yasekhaya, izigqibo ezingasentla zinokufikelelwa ngokwenene.
Eyona nto iphambili ekwandiseni i-viscosity ye-HPMC kukuvalwa okuphezulu kwe-reactor kunye ne-high-pressure reaction kunye nezinto eziluhlaza ezisemgangathweni ophezulu. Umoya ophezulu uthintela ukuwohloka kwe-cellulose yi-oksijini, kwaye imeko ye-high-pressure reaction ikhuthaza ukungena kwe-etherification agent kwi-cellulose kwaye iqinisekisa ukufana kwemveliso.
Isalathisi esisisiseko se-200000cps hydroxypropyl methylcellulose:
Isisombululo samanzi esi-2% i-viscosity eyi-200000cps
Ubumsulwa bemveliso ≥98%
Umxholo weMethoxy 19-24%
Umxholo we-Hydroxypropoxy: 4-12%
Iimpawu ze-200000cps ze-hydroxypropyl methylcellulose:
1. Iipropati ezibalaseleyo zokugcina amanzi kunye nokuqina ukuqinisekisa ukufuma okupheleleyo kwe-slurry.
2. Amandla aphezulu okubopha kunye nefuthe elibonakalayo lokungenisa umoya, lithintela ngempumelelo ukushwabana nokuqhekeka.
3. Libazisa ukukhululwa kobushushu bokufuma kwesamente, libazisa ixesha lokuseta, kwaye ulawule ixesha elisebenzayo lesamente.
4. Ukuphucula ukuqina kwamanzi kwi-mortar epompiweyo, ukuphucula i-rheology, kunye nokuthintela ukwahlulwahlulwa kunye nokopha.
5. Iimveliso ezikhethekileyo, ezijolise kwindawo yokwakha enobushushu obuphezulu ehlotyeni, ukuqinisekisa ukufuma kakuhle kodaka ngaphandle kokususwa kolwelo.
Ngenxa yokulawulwa kwemarike okucothayo, ukhuphiswano kwishishini le-mortar luya lusanda. Ukuze bahlangabezane nemarike, abanye abathengisi baxube izinto ezininzi ezingabizi kakhulu ukuvelisa i-cellulose ether engabizi. Apha, umhleli unyanzelekile ukukhumbuza abathengi ukuba bangalandeli amaxabiso aphantsi ngokungaboniyo, ukuze bangakhohliswa. Bakhohliswe, bakhokelele kwiingozi zobunjineli, kwaye ekugqibeleni ilahleko zingaphezulu kweenzuzo.
Iindlela eziqhelekileyo zokurhweba kunye neendlela zokuchonga:
(1) Ukongezwa kwe-amide kwi-cellulose ether kunokunyusa ngokukhawuleza i-viscosity yesisombululo se-cellulose ether, okwenza kube nzima ukuyichonga nge-viscometer.
Indlela yokuchongwa: Ngenxa yeempawu ze-amides, olu hlobo lwesisombululo se-cellulose ether ludla ngokuba ne-stringing phenomenon, kodwa i-cellulose ether elungileyo ayizukuvela i-stringing phenomenon emva kokunyibilika, isisombululo sifana nejeli, esibizwa ngokuba sinamathelayo kodwa asidibani.
(2) Yongeza istatshi kwi-cellulose ether. Istatshi asinyibiliki emanzini, kwaye isisombululo sihlala singadlulisi ukukhanya kakuhle.
Indlela yokuchonga: Lahla isisombululo se-cellulose ether nge-iodine, ukuba umbala ujika ube luhlaza okwesibhakabhaka, kungathathwa ngokuba kongezwe isitatshi.
(3) Yongeza umgubo we-polyvinyl alcohol. Njengoko sonke sisazi, ixabiso lemarike le-polyvinyl alcohol powder efana ne-2488 kunye ne-1788 lidla ngokuba liphantsi kunele-cellulose ether, kwaye ukuxuba umgubo we-polyvinyl alcohol powder kunokunciphisa ixabiso le-cellulose ether.
Indlela yokuchonga: Olu hlobo lwe-cellulose ether ludla ngokuba yi-granular kwaye luxineneyo. Lunyibilika ngokukhawuleza ngamanzi, khetha isisombululo ngentonga yeglasi, kuya kubakho into ecacileyo ngakumbi yokudibanisa.
Isishwankathelo: Ngenxa yesakhiwo sayo esikhethekileyo kunye namaqela, ukugcinwa kwamanzi kwe-cellulose ether akunakuthathelwa indawo zezinye izinto. Nokuba loluphi uhlobo lwe-filler oluxutywe kuyo, ukuba nje ixutywe ngobuninzi, ukugcinwa kwamanzi kwayo kuya kuncipha kakhulu. Ubungakanani be-HPMC ene-viscosity eqhelekileyo ye-10W kwi-mortar eqhelekileyo yi-0.15 ~ 0.2 ‰, kwaye izinga lokugcinwa kwamanzi lingaphezulu kwe-88%. Ukopha kuyingozi ngakumbi. Ke ngoko, izinga lokugcinwa kwamanzi luphawu olubalulekileyo lokulinganisa umgangatho we-HPMC, nokuba ilungile okanye ayilunganga, ukuba nje yongezwa kwi-mortar, kuya kucaca ngokujonga nje.
Ixesha lokuthumela: Meyi-10-2023